scholarly journals SYNTHESIS AND CHARACTERIZATION OF Cu (II) COMPLEXS WITH 1,4,8-TRIS(2-HIDROXYMETHIL)-11-METHYL-1,4,8,11-TETRAAZACYCLOTETRADECANE

2010 ◽  
Vol 3 (2) ◽  
pp. 70-73 ◽  
Author(s):  
Sentot Budi Rahardjo
Keyword(s):  
Ir Spectra ◽  
Magnetic Moment ◽  
Synthesis And Characterization ◽  
Chemical Formula ◽  
Visible Spectra ◽  
Cu Bonding

Cu (II) complexs with 1,4,8-tris(2-hidroxymethyl)-11-methyl-1,4,8,11-tetraazacyclotetradecane (L) have been synthesized with chemical formula of [CuL](ClO4) (experimental Cu = 32.7 %, H = 6.4%, theoritical Cu = 32.6 %, H = 6.4 %). Its magnetic moment of 1.90 BM indicated that the complexs is paramagnetic and there are no Cu-Cu bonding. This complexs is stable with the value of log k [CuL]2+ = 17.3(2). Visible spectra of [CuL]2+ showed that single wide peak at λmax of 628 nm (ε = 164 dm3.mol-1.cm-1) and indicated of E9 - T29 transition. The IR spectra and the conductancy data indicated that the ClO4 was not coordinated to Cu.   Keywords: tembaga (II), senyawa kompleks, paramagnetik

scholarly journals Synthesis and Characterization of Some Novel Oxazine, Thiazine and Pyrazol Derivatives

2016 ◽  
Vol 13 (2) ◽  
pp. 244-252
Author(s):  
Baghdad Science Journal
Keyword(s):  
Acetic Acid ◽  
Ir Spectra ◽  
Glacial Acetic Acid ◽  
Basic Medium ◽  
Synthesis And Characterization ◽  
Pyrazole Derivatives ◽  
Phenyl Hydrazine ◽  
H Nmr ◽  
Ft Ir

In this paper, some chalcone derivatives (C1, C2) were synthesized based on the reaction of equal amount of substituted acetophenone and substituted banzaldehyde in basic medium. Oxazine and thiazine derivatives were prepared from the reaction of chalcones (C1-C2) with urea and thiourea respectively in a basic medium. Pyrazole derivatives were prepared based on the reaction of chalcones with hydrazine mono hydrate or phenyl hydrazine in the presence of glacial acetic acid as a catalyst. The new synthesized compounds were identified using various physical techniques like1 H-NMR and FT-IR spectra.

scholarly journals Synthesis and Characterization of New Oxovanadium(IV) Coordination Compounds with Pyrazol-5-one Azo Derivatives

1998 ◽  
Vol 6 (7) ◽  
pp. 91-99
Author(s):  
Anca EMANDI
Keyword(s):  
Electronic Spectra ◽  
Coordination Compounds ◽  
Synthesis And Characterization ◽  
Type I ◽  
Molecular Weights ◽  
Elementary Analysis ◽  
Visible Spectra ◽  
Azo Derivatives ◽  
Donor System

A new series of oxovanadium(IV) chelates containing bi-and tridentate pyrazol-5-one azo derivatives ligands of the type (I) [VO(L)2] and (2) [VO(L)(H2O)] have been prepared and characterized by elementary analysis, IR, electronic spectra, conductance measurements, and molecular weights. The ligands coordinate through (O-N) donor system as monobasic and bidentate (HL) for the first type and through (0-N-O) donor system as dibasic and tridentate (H2L) for the second type of complexes. The molecular weights, the presence of the (V=O) stretching band around 950 cm -1, and the visible spectra suggest a monomeric penta-coordinated structure for these complexes.

scholarly journals Synthesis and characterization of novel metal complexes of (pentulose-?-lactone-2,3-enedibenzoate barbituric acid) with some metal ions

2013 ◽  
Vol 10 (3) ◽  
pp. 597-606
Author(s):  
Baghdad Science Journal
Keyword(s):  
Atomic Absorption ◽  
Magnetic Moment ◽  
Sodium Methoxide ◽  
Barbituric Acid ◽  
Molar Conductivity ◽  
Alkaline Media ◽  
Synthesis And Characterization ◽  
Conductivity Measurements ◽  
Vis Spectroscopy

New (pentulose-?-lactone-2,3-enedibenzoate barbituric acid) (L) have been synthesized by reaction of (5-C-dimethyl malonyl-pentulose-?-lactone-2,3-enedibenzoate) with urea in alkaline media (sodium methoxide). (Ca+2, Co+2, Ni+2, Cu+2, Zn+2, Cd+2 and Hg+2) complexes of (pentulose-?-lactone-2,3-enedibenzoate barbituric acid) (L) have been prepared and characterized by (1H and 13CNMR), FTIR, (U.V-Vis) spectroscopy, Atomic absorption spectrophotometer (A.A.S), Molar conductivity measurements and Magnetic moment measurements, and the following general formula has been given for the prepared complexes [MLCl2(H2O)].XH2O, where M = (Ca+2, Co+2, Ni+2, Cu+2, Zn+2, Cd+2, Hg+2), X = five molecules with (Cd+2) complex, L = (pentulose-?-lactone-2,3-enedibenzoate barbituric acid).

Synthesis and Characterization of Diarylthiourea Derivatives of Tungsten Carbonyl

2004 ◽  
Vol 59 (5) ◽  
pp. 554-558 ◽  
Author(s):  
Amar Srivastava ◽  
A.K. Shrimal ◽  
Amar Nath
Keyword(s):  
Ir Spectra ◽  
Ultra Violet ◽  
Mixed Ligand ◽  
Force Constants ◽  
Synthesis And Characterization ◽  
Carbonyl Derivatives ◽  
Tungsten Carbonyl ◽  
Derivatives Of

Abstract Reactions of five sym-diarylthioureas (L), viz,, sym-diphenylthiourea (dptu), sym-di-o-tolylthiourea (dottu), sym-di-p-tolylthiourea (dpttu), sym-di-o-anisylthiourea (doatu) and sym-di-α- naphthylthiourea (dαntu) with W(CO)6 have been performed both by reflux and ultra-violet irradiation methods in which only monosubstituted products [(L)W(CO)5] are obtained. Several mixed ligand tungsten carbonyl derivatives, viz., [(o-phen or 2,2’-bipy)(L)W(CO)3] and [(Ph3P or Ph3As)(L)W(CO)4] have also been synthesized. Halogenation of [(L)W(CO)5] yielded heptacoordinated [(L)W(CO)4X2] (X = Br or I). The complexes have been characterized by microanalytical data, conductivity and IR measurements. The C-O stretching force constants and CO-CO stretch-stretch interaction constants of [(L)W(CO)5] derivatives have also been evaluated from the IR spectra.

Synthesis and characterization of novel tetrakis (3-hydroxypropylmercapto)-substituted phthalocyanines

2013 ◽  
Vol 17 (06n07) ◽  
pp. 573-586 ◽  
Author(s):  
Çiğdem Yağcı ◽  
Ahmet Bilgin
Keyword(s):  
Differential Scanning Calorimetry ◽  
Thermal Properties ◽  
Synthesis And Characterization ◽  
The Novel ◽  
Scanning Calorimetry ◽  
Metal Free ◽  
Visible Spectra ◽  
Ft Ir ◽  
Aromatic Nitro

A phthalonitrile precursor 4-(3-hydroxypropylmercapto)phthalonitrile (3) was synthesized via a base-catalyzed nucleophilic aromatic nitro displacement of 4-nitrophthalonitrile with the 3-mercapto-1-propanol. A novel tetrasubstituted metal-free phthalocyanine (4) ( M = 2 H ) and its metal complexes (5–8) ( M = Zn , Ni , Cu and Co ) bearing 3-hydroxypropylmercapto moieties were prepared by the cyclotetramerization reaction of (3) with the appropriate materials. The visible spectra of the zinc(II) phthalocyanine (5) was recorded with different concentrations and different ions as Ag +, Hg 2+ and Pb 2+ in DMF and also with different solvents as dimethylformamide and pyridine. Fluorescence spectrum of the compound (5) was also studied. Temperature and frequency dependence of AC conductivity for (4–8) was investigated in air and under vacuum and were found to be ~10-8–10-5 S.m-1. Thermal properties of the phthalocyanines were examined by differential scanning calorimetry. All the novel compounds have been characterized by elemental analysis, UV-vis, FT-IR, NMR and MS spectral data and DSC techniques.

Synthesis and Characterization of Cu(I) Complex Compounds With Methyl Isonicotinate

1975 ◽  
Vol 53 (17) ◽  
pp. 2657-2663 ◽  
Author(s):  
Mohamed A. S. Goher
Keyword(s):  
Charge Transfer ◽  
Analytical Data ◽  
Complex Compounds ◽  
Synthesis And Characterization ◽  
Conductivity Measurements ◽  
Visible Spectra

The preparation of Cu(I) complexes of methyl isonicotinate, MeIN, of the formula (MeIN)nCuX, in which n = 1,2, 3, and 4 and X is Cl, Br, I, CN, SCN, and ClO4, has been described. The isolated complexes are characterized by their analytical data, diamagnetism, and conductivity measurements. The M → L charge transfer bands in the visible spectra and the i.r. spectra of these complexes are discussed.

scholarly journals Microwave assisted synthesis and characterization of Fe3+-O-Fe3+ sublattice magnetic moment influencing ferromagnetism exhibited erbium orthoferrite sublattice (ErFeO3) perovskite nanopowders

2022 ◽  
Vol 890 ◽  
pp. 161825
Author(s):  
Harikrishnan Ravichandran ◽  
Baskaran Irusan ◽  
Sathyaseelan Balaraman ◽  
Mani Govindasamy ◽  
Senthilnathan Krishnamoorthy ◽  
...  
Keyword(s):  
Magnetic Moment ◽  
Synthesis And Characterization ◽  
Microwave Assisted Synthesis ◽  
Microwave Assisted

scholarly journals Synthesis and Characterization of Metallic Gel Complexes Derived from Carboxymethyl Cellulose

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
H. D. Juneja ◽  
Manisha Joshi ◽  
J. P. Kanfade
Keyword(s):  
Thermal Analysis ◽  
Ir Spectra ◽  
Carboxymethyl Cellulose ◽  
Octahedral Geometry ◽  
Synthesis And Characterization ◽  
Planar Geometry ◽  
Tetrahedral Geometry ◽  
Square Planar ◽  
Thermal Data

The oxaloyl carboxymethyl cellulose (OCMC) complexes of Mn(II), Co(II), Ni(II), Cu(II), and Zn(II) metal ions have been synthesized and the coordination of OCMC in these complexes has been investigated through IR spectra, reflectance spectra, and thermal analysis. On the basis of spectral and thermal data an octahedral geometry was assigned to[Mn(II)OCMC(H2O)2]nand[Co(II)OCMC(H2O)2]n, square planar geometry was assigned to[Cu(II)OCMC]n, and tetrahedral geometry was assigned to[Ni(II)OCMC]nand[Zn(II)OCMC]nMetallic Gel complexes.

scholarly journals Synthesis and Characterization of Some Novel Schiff Base Complexes of Oxovanadium(IV) Cation

2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
A. K. Yadava ◽  
H. S. Yadav ◽  
Sanjay Singh ◽  
U. S. Yadav ◽  
D. P. Rao
Keyword(s):  
Schiff Base ◽  
Spectral Data ◽  
Magnetic Moment ◽  
Electrical Conductance ◽  
Schiff Base Complexes ◽  
Synthesis And Characterization ◽  
Electronic Spectral Data ◽  
Elemental Analyses ◽  
Tetraazamacrocyclic Ligands

A series of oxovanadium(IV) complexes of the type [VO(mac)]SO4(where mac = tetraazamacrocyclic ligands derived from condensation of 4,4,4-trifluro-1-(2-furyl)-1,3-butanedione or 4,4,4-trifluro-1-(2-thenyl)-1,3-butanedione withp-phenylenediamine and their reaction withβ-diketones) have been prepared using oxometal ion of vanadium as kinetic template. These complexes have been ascertained by electrical conductance, magnetic moment, elemental analyses, infrared, e.s.r. and electronic spectral data. All the oxovanadium(IV) complexes are five-coordinate ones.

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